JPH06262429A - Automatic saw blade changer for band saw machine - Google Patents

Abstract

PURPOSE:To attain continuous automatic operation of a band saw machine while contriving safety of work by reducing a burden of a worker by automatically-changing a saw blade. CONSTITUTION:In a horizontal band saw machine 1, a workpiece W is cut by running a saw blade BS wound to drive and driven wheels 23, 25 built in a cutting head. A changer 39 for removing the saw blade BS, mounted on this horizontal band saw machine 1, stored in a tool stocker 47 and for mounting the saw blade BS, stored in the tool stocker 47, on the horizontal band saw machine 1 and the tool stocker 47 for stocking a plurality of the saw blades BS are movably provided in the cutting head so as to be positioned in a front surface position of the cutting head.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic saw blade exchanging device for a band saw machine, and more particularly to an automatic saw blade exchanging device for a band saw machine which automatically replaces a saw blade of a horizontal band saw machine.

[0002]

A band saw machine generally comprises an endless band saw blade wound around a drive wheel and a driven wheel provided in a saw blade housing, the band saw blade running between the two wheels. , To cut a work material.

In this case, the band saw blade must be given a predetermined tension by the movement of the driven wheel so that the running force is given by the drive wheel.

Conventionally, in the replacement of the saw blade of the band saw machine, it is general that the operator removes the saw blade from the two wheels and attaches a new saw blade to the two wheels.

[0005]

However, the replacement of the saw blade is very cumbersome and may be dangerous, so automation of the saw blade replacement is desired. Further, in order to continuously perform automatic operation of the band saw machine, automation of saw blade replacement is desired.

The object of the present invention has been made in view of such a conventional technique, and the automatic replacement of the saw blade reduces the burden on the operator to make the work safer and the continuous automatic sawing machine. An object is to provide an automatic saw blade changing device for a band saw machine that enables operation.

[0007]

In order to achieve the above object, the present invention is a band saw for cutting a work material by running a saw blade wound around a drive wheel and a driven wheel incorporated in a cutting head. A tool that stocks multiple saw blades as a disc and removes the saw blade attached to this band saw disc and stores it in the tool stocker, or attaches the saw blade stored in the tool stocker to the band saw disc. An automatic saw blade changing device for a band saw machine was constructed by arranging a stocker on the cutting head so that it could be moved to the front position of the cutting head.

Further, the changer is provided on the cutting head, and the tool stocker is provided on the cutting head so that the tool stocker can be raised and lowered and swiveled to constitute an automatic saw blade changing device for a band saw machine.

Further, the changer is provided on the base of the band saw machine so as to be movable left and right and rotatable, and the tool stocker is provided on the cutting head so as to be able to move up and down and rotate to constitute an automatic saw blade changing device for the band saw machine.

Further, the changer is provided on the cutting head, and a plurality of tool stockers are provided in parallel on the cutting head so that the tool stocker can be moved up and down to constitute an automatic saw blade changing device for a band saw machine.

Further, the changer is provided on the tool stocker, and the tool stocker is provided on the cutting head so as to be able to move up and down and turn, thereby constructing an automatic saw blade changing device for a band saw machine.

[0012]

According to the automatic saw blade exchanging device for a band saw machine according to the present invention, a band saw for cutting a work material by running a saw blade wound around a drive wheel and a driven wheel incorporated in a cutting head. Replacing the board Multiple saw blades are stored in the tool stocker, and the changer provided in the cutting head or tool stocker removes the saw blade attached to the band saw machine and stores it in the tool stocker, or it is stored in the tool stocker. Automatically attach the saw blade to the band saw. Therefore, if you store the same saw blade multiple times,
The cutting process for a long time can be continuously operated, and various cutting processes can be continuously performed by storing various saw blades.

Since the tool stocker can be positioned in front of the cutting head by moving the tool stocker up and down, or moving up and down and turning when the saw blade is replaced, the change of the saw blade by the changer provided in the cutting head is simple. It also eliminates the need for a saw blade movement space or replacement space. For this reason, it is possible to reduce the number of replacement steps and save space in the entire apparatus.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the drawings.

Referring to FIG. 1, a horizontal band saw machine 1 comprises a box-shaped base 3 and a cutting head 5 having a substantially C-shape as a whole, and the cutting head 5 is held vertically while being horizontal. It is pivotally supported on the base 3 via a hinge pin 7 so as to be able to move up and down. That is, the cutting head 5 is configured to rotate up and down around the hinge pin 7 by the lifting cylinder 9, and by the action of the lifting cylinder 9, the saw blade BS is cut into and lifted from the work W. It is a thing.

A work table 13 having a large number of rollers 11 on which the work W is movably mounted is provided on the upper portion of the base 3, and the work W is sandwiched between the work tables 13. A fixing material feeding vise (not shown) and a main body vise 15 are provided. The main body vice 15 is composed of a fixed vice jaw 15F and a movable vice jaw 15M that can freely move toward and away from the fixed vice jaw 15F.

The cutting head 5 is provided with housings 17 and 19 spaced apart from each other on both sides.
A control device (not shown) is provided on the upper portion of 9.
The housings 17 and 19 are connected by a beam member 21.

A housing 17 for the cutting head 5,
A drive wheel 23 and a driven wheel 25 are installed in the shaft 19 via shafts 27 and 29, respectively. The drive wheel 23 and the driven wheel 25 have an endless saw blade BS.
Is wound.

A drive motor (not shown) is linked to the shaft 27 of the drive wheel 23 at a fixed position, and a rotational force is applied by the drive motor. The driven wheel 25 is free to rotate, and a tension cylinder (not shown) as a tension imparting device for adjusting the tension of the saw blade BS is attached to the shaft 29 of the driven wheel 25. It is possible to approach and separate from 23.

That is, the driven wheel 25 is moved away from the drive wheel 23 by the tension cylinder to apply a predetermined tension to the saw blade BS.

The beam member 21 has a saw blade guide device 31.
Is provided. A fixed side guide 33 and a movable side guide 35 are mounted on the saw blade guide device 31, and the fixed side guide 33 and the movable side guide 35 allow the saw blade BS to move.
In the cutting region for cutting the work material W, the saw blade BS is guided and supported in a state in which the tooth tips of the saw blade BS are twisted and raised, for example, 90 degrees so as to face vertically downward.

That is, each of the fixed side guide 33 and the movable side guide 35 has a saw blade twisting and raising mechanism (not shown) and an insert 37 at its lower end. The saw blade twisting and raising mechanism is for twisting and raising the saw blade BS, for example, 90 degrees after mounting the saw blade BS mounted in a non-twisting state, and directing the saw blade BS direction to the cutting direction. The insert 37 is retractable so as not to get in the way when the saw blade BS is attached, and guides the saw blade BS in a twisted and raised state so that it can travel freely. A wire brush (not shown) for removing chips for removing chips generated when the work W is cut from the saw blade BS is provided in the vicinity of the insert 37 in a retractable manner.

With the above construction, the driven wheel 25 is driven by the tension cylinder when the saw blade BS is wound around the drive wheel 23 and the driven wheel 25.
A predetermined tension is applied to the saw blade BS by moving the saw blade BS away from the saw blade BS. Then, the driving wheel 23 is rotated by a driving motor (not shown) to drive the saw blade BS for traveling. At this time, the saw blade BS in the cutting region is guided by the insert 37 in a state of being twisted up by 90 degrees, for example, so that the direction of the saw blade BS matches the cutting direction and the workpiece W can be cut.

The fixed side guide 33 is fixedly attached to the saw blade guide device 31 in correspondence with the reference side vise positions of the main body vise 15 and the material feeding vise (not shown), and the fixed side guide 33 is movable. The guide 35 is attached so that its position can be adjusted so as to correspond to the size of the work material W. Further, changers 39 are attached to both outer sides of the fixed side guide 33 and the movable side guide 35. This changer 39
Four grippers 41 that clamp the saw blade BS, and two arm members 4 with the grippers 41 attached to both ends, respectively.
3,43 are provided.

The arm members 43, 43 are provided on the front surfaces of the housings 17, 19 on both outer sides of the fixed side guide 33 and the movable side guide 35, respectively.
Is provided so as to be able to move toward and away from the tool stocker 47, which will be described later. Further, the arm member 4 is provided above and below the housings 17 and 19 with the cylinder 45 interposed therebetween.
Guide rods 49 and 49 are provided to move the rods 3 and 43 while keeping them vertical.

Further, although the detailed illustration is omitted, the grippers 41 provided at both ends of the arm members 43, 43 can move toward and away from each other along the arm members 43, 43. Therefore, by moving the gripper 41 in the vertical direction while the saw blade BS is clamped, the interval between the upper and lower saw blades BS can be enlarged or reduced.

With the above structure, by operating the cylinder 45, the arm members 43, 43 can be moved to the tool stocker 47 side (front side in FIG. 1) or the band saw machine 1 side (back side in FIG. 1). . As a result, the saw blade BS clamped by the gripper 41 is stored in the tool stocker 47, or the tool stocker 47 is stored.
The saw blade BS taken out from can be moved to the band saw machine 1 side.

On the other hand, the tool stocker 47 for stocking a plurality of (two in this case) saw blades BS has a horizontally long plate-like body 51.
Is rotatably positioned about a central axis (not shown). That is, a plurality of fluid pressure operated cylinders 53 are erected on the upper frame 5a of the cutting head 5, and a tool stocker rotation motor (not shown) is built in the lower end of the piston rod 55 hanging from the cylinders 53. Blocks 57 are connected. The output shaft 59 of the tool stocker rotation motor protruding from the block 57 is engaged with the center of the plate-like body 51.

Further, saw blade holding wheels 61R and 61L are provided on both surfaces of the plate-like body 51, and one end of the plate-like body 51 (see FIG. 1).
61L saw blade holding ring whose position is fixed on the left side in FIG.
Is provided, and a movable saw blade holding ring 61R is provided at the other end of the plate-like body 51, and the movable saw blade holding ring 61R is provided.
As a moving means of the above, a tension device 63 having a driving source such as a cylinder or a spring is provided.

With the above configuration, the saw blade holding wheels 61L, 61
A band saw blade BS for replacement is hung around R and a tension device 6
A predetermined tension is applied to the band saw blade BS by 3 and is held so that the band saw blade BS does not come out from the saw blade holding wheels 61L and 61R. Then, the plate-shaped body 51 is driven by a tool stocker rotation motor (not shown) to drive the plate-shaped body 5
1 is turned 180 degrees and positioned vertically. Further, the plate-like body 51 in the vertical state can be moved up and down by the operation of the cylinder 53, and is positioned in front of the changer 39 at the lower limit, so that the saw blade BS can be replaced by the changer 39.

Next, the operation of replacing the saw blade BS will be described. First, the operation of removing the saw blade BS from the band saw machine 1 will be described. Before starting the replacement operation of the saw blade BS, the desired replacement saw blade BS is stored in the tool stocker 47 in advance,
Keep an empty storage space on one side. Further, the changer 39 stands by behind the cutting head 5. Then, the tool stocker 47 is rotated to position the vacant surface for collecting the saw blade BS toward the band saw machine 1 side. The wire brush (not shown) is retracted so that it does not interfere with the replacement of the saw blade BS.

The cutting head 5 is positioned at the uppermost end, and a twisting and raising mechanism (not shown) is operated to operate the saw blade B.
Release the twist of S. Then, the gripper 41 is opened and the changer 39 is advanced slightly to move the band saw 1
Move to the position of the saw blade BS attached to the. After that, the gripper 41 is closed to clamp the saw blade BS,
Open the insert 37 at the tip of the saw blade guides 33, 35.

By moving the driven wheel 25 to the drive wheel 23 side by the operation of a tension cylinder (not shown), the tension of the saw blade BS is released, and the gripper 4 is released.
1 to the outside to facilitate removal of the saw blade BS from the drive wheel 23 and driven wheel 25. Then, the cylinder 53 is operated to lower the plate-like body 51. In this state, the tool stocker 47 moves the drive wheel 23 and the driven wheel 2
It will be located just in front of 5.

By operating the cylinder 45 while the gripper 41 clamps the saw blade BS to extend the changer 39, the saw blade BS is driven, taken out from the driven wheels 23 and 25, and moved to the tool stocker 47 position. The saw blade BS is locked to the saw blade holding wheels 61R and 61L.

When the saw blade BS is locked to the saw blade holding wheels 61R and 61L, the tension device 63 is actuated to separate the saw blade holding wheel 61R from the saw blade holding wheel 61L so that the stored saw blade BS has a predetermined tension. Is given. Saw blade B due to this tension
S will be securely held in the tool stocker 47. Then, the gripper 41 is opened to unclamp the saw blade BS, and the cylinder 45 is operated to disengage the changer 39 from the tool stocker 47.

The cylinder 53 is operated to raise the plate-like body 51, and the cylinder 53 is stopped to a position where the plate-like body 51 can rotate, that is, at the ascending end, and the storage of the saw blade BS is completed.

Next, the operation of mounting the new saw blade BS on the band saw machine 1 will be described. This operation is the reverse of the operation of storing the saw blade BS in the tool stocker 47 from the band saw machine 1 described above.

That is, the new saw blade BS to be replaced stored in the plate-like body 51 is driven, the plate-like body 51 is rotationally positioned so as to be positioned in front of the driven wheels 23 and 25, and the cylinder 53 is operated to operate the plate. The body 51 is lowered. Then, the gripper 41 is opened and the cylinder 45 is operated to clamp the replacement saw blade BS by the gripper 41.

The saw blade holding ring 61R provided on the plate-like body 51 is moved to the saw blade holding ring 61L side to release the tension of the replacement saw blade BS, and the cylinder 45 is operated to move the replacement saw blade BS to the tool stocker 47. The replacement saw blade BS is driven by driving the changer 39 and moving it to the driven wheels 23, 25 side while being taken out from the driven wheel 23, 25, and the driven wheel 25 is driven by the tension cylinder (not shown). And tension is applied to the attached saw blade BS.

Then, the gripper 41 is opened to open the cylinder 4
5 is retracted, the changer 39 is retracted rearward, the saw blade BS is twisted up by 90 degrees by a twisting mechanism (not shown) and directed toward the cutting direction, and a wire brush (not shown) is moved to a predetermined position. Plate-shaped body 5 of the tool stocker 47
1 is returned to the rising end, and the attachment of the saw blade BS is completed.

With the structure and operation as described above, the tool stocker 47 is provided inside the band saw machine 1 instead of installing the tool stocker outside the band saw machine as in the conventional case, so that the space of the entire apparatus can be saved and the tool can be saved. Stocker 4
Since the mechanism of 7 is simple, the cost can be reduced. Further, since the saw blades can be automatically replaced, the burden on the operator can be reduced, the work can be made safe, and the continuous automatic operation of the band saw machine 1 can be enabled.

FIG. 2 shows a second embodiment. In this embodiment, the tool stocker 47 has three saw blade stock surfaces. That is, the saw blade BS is stored in the rotatable three-sided block body 65 provided in the tool stocker 47, and a larger number of saw blades BS can be stored, and the same effect as the first embodiment described above can be obtained. Obtainable.

FIG. 3 shows a third embodiment. In this embodiment, the tool stocker 47 has four saw blade stock surfaces. That is, the saw blades BS are stored in the rotatable four-sided block body 67 provided in the tool stocker 47, and more saw blades BS can be stored, and the same effect as the first embodiment described above can be obtained. Obtainable.

A fourth embodiment is shown in FIGS. 4 and 5. In this embodiment, the installation place of the changer 39 is different from that of the first embodiment. That is, in the first embodiment, the changer 39 is provided on the housings 17 and 19, but in this embodiment, the changer 39 is provided on the base 3 between the band saw machine 1 and the tool stocker 47.
It is reciprocally movable between the drive wheel 23 and the driven wheel 25 side provided on the base 3 mounted on the band saw machine 1 and the saw blade holding wheels 61L and 61R side provided on the tool stocker 47.

Although this reciprocating mechanism has a known structure and is not shown in the figure, it is engaged with the base 3 by means of a dovetail groove or the like to drive and drive the driven wheels 23 and 25 and the tool stocker 4.
A block 6 for supporting the changer 39 with respect to 7 through a screw member from, for example, a fluid pressure operated cylinder or a motor.
9 is reciprocally movable. The block 69 is rotatable by a hinge pin 71, and the changer 39 mounted on the block 69 is pulled up when cutting the work material, so that the drive mechanism thereof has a known configuration, so illustration thereof is omitted. The changer 39 is adapted to be swung around the hinge pin 71 by an actuator such as a motor.

A tool stocker turning motor 73 is mounted on the block 69, and a support plate 77 for supporting the changer 39 is fixed to the output side shaft 75 of the tool stocker turning motor 73. The support plate 77 is provided with a plurality of changers 39, which are the same parts as in the first embodiment. That is, the arm member 43 having the grippers 41 at both ends is provided so as to be able to move forward and backward by the cylinder 53 using the guide rod 49 as a guide.

With the above configuration, the operation is as shown in FIG.
Drive of the band saw machine 1, driven wheels 23, 2
In order to replace the saw blade BS hung around 5, the changer 39 positioned in the vertical state is moved to the band saw machine 1 side,
By operating the cylinder 45, the saw blade BS is clamped by the gripper 41. Then, the tension of the driven wheel 25 is loosened, the gripper 41 is retracted and stopped at approximately the center of the band saw machine 1 and the tool stocker 47, and the tool stocker turning motor 73 is driven to move the support plate 77 of the gripper 41 to 180 degrees. Rotate once.

When the support plate 77 turns, the changer 39 is moved to the tool stocker 47 side, and the tool stocker 47 is moved.
The saw blade BS is incorporated into the empty saw blade holding wheels 61L and 61R, the gripper 41 is released, the intermediate portion between the band saw machine 1 and the tool stocker 41 is moved to the standby state again, and the saw blade BS is moved to the tool stocker 47. Finish the work of storing. Further, in order to mount the saw blade BS to be exchanged stored in the tool stocker 47 on the band saw machine 1, the desired saw blade BS can be mounted on the band saw machine 1 by reversing the above-described operation. Thus, the effect can be the same as that of the first embodiment.

A fifth embodiment is shown in FIGS. 6 and 7. In this embodiment, the plate-like members 51 of the tool stocker 47 are provided in parallel and separated from each other on two surfaces, the mechanism for rotating the plate-like members 51 as in the first embodiment is omitted, and a plurality of plate-like members 51 are vertically provided. , The cylinder 53 is selected and operated to replace the saw blade BS. Therefore, it is possible to obtain the same effect as that of the first embodiment described above.

FIG. 8 shows a sixth embodiment. In this embodiment, a changer 39 is provided on the tool stocker 47, and a plurality of changers 39 having exactly the same configuration as those of the first embodiment are provided on both sides of the plate-like body 51 of the tool stocker 47, which is described above. It is possible to obtain the same effect as that of the first embodiment.

The present invention is not limited to the above-described embodiments, but can be implemented in other modes by making appropriate changes.

[0052]

As can be understood from the above description of the embodiments, according to the present invention, the tool stocker and the changer are provided inside the band saw machine because of the construction as described in the claims. By providing it, the space of the entire apparatus can be saved, and the cost can be reduced because the tool stocker mechanism is simple. Further, since the saw blade can be replaced automatically, the burden on the operator is reduced, the work is made safe, and the continuous automatic operation of the band saw machine is enabled.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of an automatic saw blade changing device for a band saw machine according to the present invention.

FIG. 2 is a perspective view showing a second embodiment of the tool stocker in the automatic saw blade changing device of the band saw machine according to the present invention.

FIG. 3 is a perspective view showing a third embodiment of the tool stocker in the automatic saw blade changing device for a band saw machine according to the present invention.

FIG. 4 is a perspective explanatory view of a changer in an automatic saw blade changing device of a band saw machine according to a fourth embodiment of the present invention.

5A and 5B are explanatory views of the operation in FIG.

FIG. 6 is a sectional view of a tool stocker in an automatic saw blade changing device of a band saw machine according to a fifth embodiment of the present invention.

7 is an explanatory perspective view of FIG.

FIG. 8 is a perspective view showing a sixth embodiment according to the present invention, in which a changer in an automatic saw blade changing device of a band saw machine is incorporated in a tool stocker.

[Explanation of symbols]

 1 Horizontal band saw machine 3 Base 5 Cutting head 23 Drive wheel 25 Driven wheel 39 Changer 47 Tool stocker BS Saw blade

Claims (5)

[Claims] 1. A band saw machine for cutting a work material by running a saw blade wound around a drive wheel and a driven wheel incorporated in a cutting head, and removing the saw blade mounted on the band saw machine. And a tool stocker that stores the saw blades stored in the tool stocker on the band saw machine and a tool stocker that stocks multiple saw blades so that they can be moved to the front of the cutting head. An automatic saw blade changing device for a band saw machine, which is characterized in that 2. The changer is provided on the cutting head, and the tool stocker is provided on the cutting head so as to be vertically movable and rotatable.
Automatic saw blade changing device for the band saw machine described. 3. The band saw machine according to claim 1, wherein the changer is provided on a base of the band saw machine so as to be horizontally movable and rotatable, and a tool stocker is provided on a cutting head so as to be vertically movable and rotatable. Automatic saw blade changing device. 4. The automatic saw blade changing device for a band saw machine according to claim 1, wherein the changer is provided on the cutting head, and a plurality of tool stockers are provided in parallel on the cutting head so as to be vertically movable. 5. The automatic saw blade changing device for a band saw machine according to claim 1, wherein the changer is provided on a tool stocker, and the tool stocker is provided on a cutting head so as to be vertically movable and rotatable.